<div class="form-group">
  <label for="username">按用户名邀请</label>
  <div class="input-group">
    <input type="text" id="username" name="username" class="form-control" placeholder="请输入用户名查找">
    <span class="input-group-prepend">
      <button type="button" class="btn btn-primary" onclick="queryUser()"><i class="fas fa-search"></i> 查找</button>
    </span>
  </div>
</div>
<div class="card usercard d-none">
  <div class="card-body">
    <h4 class="mt-0 header-title">用户列表</h4>

    <div class="media userlist">

    </div> <!-- end media -->
  </div>
  <!--end card-body-->
</div>
  <!--end card-->
